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Radar and communication integrated method based on stepping variable-frequency waves

A radar signal and radar technology, which is used in the reflection/re-radiation of radio waves, radio wave measurement systems, special data processing applications, etc., to achieve the effects of low instantaneous transmit power, cost reduction, and stability assurance

Inactive Publication Date: 2014-11-19
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Claims
  • Application Information

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Problems solved by technology

To sum up, these existing radar-communication integration methods are all based on the pulse radar system, which has certain application limitations

Method used

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  • Radar and communication integrated method based on stepping variable-frequency waves
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  • Radar and communication integrated method based on stepping variable-frequency waves

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Embodiment

[0056] Device A and device B both use independent transmitting and receiving antenna configurations. The distance between the two devices is 15m. The remaining parameters are the same, each frequency step is 2MHz, the number of frequency points is 301, the bandwidth is 600MHz, the duration of each frequency point is 100μs, and the subcarrier frequency The communication symbol rate is 500kbps. Set a target at a location 10m away from device A.

[0057] According to the processing steps of the present invention, in the first step, the device A generates two mutually orthogonal sub-carrier frequency signals Cos (2 × 10 6 πt) and Sin(2×10 6 πt).

[0058] In the second step, a differential encoder is used to encode the communication baseband signal sent by device A. For example, when the encoder input is: 0,0,1,0,1,1,0,1,1,1,0,0…, the output of the differential encoder is: 0,1,1,1,0 ,1,1,0,0,1,0….

[0059] In the third step, when the output of the differential encoder is 0, ...

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Abstract

The invention provides a radar and communication integrated method based on stepping variable-frequency waves. A frequency source modulates radar signals and communication signals to two stepping frequency sub frequencies which are not interfered with each other and emits the radar signals and the communication signals into space through the quadrature modulation technology. A receiving end separates the beat radar signals and the beat communication signals through the quadrature mixing technology. Interference does not exist between the radar signals and the communication signals, the detection performance of a radar is ensured, and the stability of communication can also be ensured. Compared with an existing radar and communication integrated mechanism based on pulse signals, under the condition of the same detection energy, the transient transmitting power needed in the radar and communication integrated method is lower, and therefore the equipment hardware structure designed according to the method can be simpler, the repeated utilization rate of resources is high, the cost of the equipment can be effectively reduced, and reliability is improved.

Description

technical field [0001] The invention relates to communication and radar networking detection technology. Background technique [0002] Radar-communication integration refers to the technology of using one device platform to simultaneously realize the two functions of radar detection of targets and data communication between devices. In order to meet the requirements of inter-radar network detection and real-time processing of complex signals, modern radars need to exchange a large amount of data with other devices. Therefore, how to use the same device to realize radar detection and data communication has attracted the attention of research institutions in various countries. Attention has been developed rapidly. [0003] At present, radar-communication integration is mainly divided into hardware integration and signal integration. Hardware integration means that radar signals and communication signals share the transceiver antenna, transmitter, receiver or some units in ot...

Claims

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Application Information

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IPC IPC(8): G01S7/42G06F19/00H04B1/52
CPCG01S13/02H04B1/525
Inventor 崔国龙叶为胡飞易川孔令讲杨晓波易伟
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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